Generate Expression from DataObject

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Hello,

I wondered if there is a way to generate an Expression based on partially
set values of a DataObject.

Motivation: Many 4GL tools provide forms for searching the database by
"reusing" the input form. The user fills in some values and the system
retrieves all entries matching those given values.

I think this could be a quick way to prototype complex search forms. For
Cayenne I would imagine creating a transient DataObject Net without
registering them in the DataContext. Setting some values, generate an
Expression based on the given values and run it against the database
retrieving 'real' DataObjects matching the value set.

Anything there that accomplishes this?

thanks
Tobias.
______________________________________
Tobias Schoessler, Java Developer
Information Management Unit
Information Technology Service
United Nations Office on Drugs and Crime

Tel: (+43-1) 26060-5173
Websites: www.unov.org, www.unodc.org
______________________________________
Impossible is not a fact, only an opinion

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